CN110373568A - A kind of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy - Google Patents
A kind of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy Download PDFInfo
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- CN110373568A CN110373568A CN201910650412.2A CN201910650412A CN110373568A CN 110373568 A CN110373568 A CN 110373568A CN 201910650412 A CN201910650412 A CN 201910650412A CN 110373568 A CN110373568 A CN 110373568A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C9/00—Alloys based on copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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Abstract
The invention discloses a kind of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy, specifically: Cu block, Cr, Mg block and Cu-Zr intermediate alloy are put into middle induction melting in melting container, obtain Cu-Cr-Zr-Mg aluminium alloy；Aluminium alloy is cast in cooling in copper mould, obtains as cast condition Cu-Cr-Zr-Mg alloy；Solution treatment, cold-rolling deformation are carried out to cast alloy, then carry out ageing treatment, it is machined to get arriving Cu-Cr-Zr-Mg alloy finished product.The present invention is by being quickly cooled down Cu-Cr-Zr-Mg aluminium alloy using copper mold, and cold-rolling deformation is introduced among traditional fixation rates, enhance supersaturated solid solution in the precipitation power of Stages of Aging, so that disperse, tiny Second Phase Particle are largely precipitated from Copper substrate, intensity, the conductivity of alloy are significantly improved tool.
Description
Technical field
The invention belongs to copper alloy preparation technical fields, are related to a kind of preparation of cold deformation strengthening Cu-Cr-Zr-Mg alloy
Method.
Background technique
Cu-Cr-Zr system alloy has high intensity, conductivity and good thermal conductivity and antioxygenic property, it is considered to be
Most there is a kind of alloy of application prospect in copper alloy with high strength and high conductivity, such alloy belongs to one of precipitation strengthening alloy, has both
Excellent electrical and thermal conductivity performance and tensile strength, and anti-softening temperature is high, wearability is good.It is added in Cu-Cr-Zr system alloy
4th constituent element Mg can have certain refining effect to the precipitated phase of Cr, alloy rigidity after timeliness is made to get a promotion, however Cu-Cr-
The promotion of Zr-Mg alloy rigidity is usually associated with the decline of conductivity.Studies have shown that alloy is after medium or strong cold deformation
Form a kind of very high structural state of dislocation density.Highdensity dislocation, which is mutually handed over, cuts, and forms cutting order, the mobility of dislocation subtracts
It is small, greatly improve the intensity of alloy, hardness.Conductivity also slightly has because of the increase of dislocation density and reduces.Single deformation is strong
Change the limited extent for improving alloy strength, to be usually used cooperatively with other schedule of reinforcements.
Summary of the invention
The object of the present invention is to provide a kind of preparation methods of cold deformation strengthening Cu-Cr-Zr-Mg alloy, solve existing
The problem of promotion of Cu-Cr-Zr-Mg alloy rigidity present in technology is usually associated with the decline of conductivity.
The technical scheme adopted by the invention is that a kind of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy, specifically
It follows the steps below to implement:
Step 1, melting:
Cu block, Cr, Mg block and Cu-Zr intermediate alloy are placed in melting container, in the induction for being connected with inert gas
Melting is carried out in smelting furnace, obtains Cu-Cr-Zr-Mg aluminium alloy；
Step 2, it casts:
The Cu-Cr-Zr-Mg aluminium alloy that step 1 is obtained is poured in copper mould, is cooling, obtains as cast condition Cu-Cr-Zr-Mg
Alloy；
Step 3, cold working and heat treatment:
The as cast condition Cu-Cr-Zr-Mg alloy that step 2 obtains is put into heat-treatment furnace and carries out solution treatment, using cold-rolling mill
To solid solution state alloy carry out cold-rolling deformation, then to after cold deformation alloy carry out ageing treatment, then it is machined to get
To Cu-Cr-Zr-Mg alloy finished product.
The features of the present invention also characterized in that:
Zr content is 20~50wt%, surplus Cu in Cu-Zr intermediate alloy in step 1.
Cr-Zr intermediate alloy is obtained with Zr through vacuum arc melting using Cu block in step 1.
Cu block, Cr, Mg block and Cu-Zr intermediate alloy are placed sequentially in melting by sequence from bottom to top and hold in step 1
In device.
Vaccum sensitive stove is controlled in the fusion process of step 1 is evacuated down to 5 × 10-3Pa or more, and it is passed through inert gas guarantor
Shield.
The temperature control mode of step 1 fusion process are as follows: alloy is rapidly heated to 1000~1200 DEG C first, heat preservation 2
~5min, then be to slowly warm up to 1300~1600 DEG C keeps the temperature 10~25min, is then cooled to 1100~1300 DEG C, and heat preservation 5~
10min。
The outer diameter of copper mould is 80~150mm in step 2, and internal diameter is 20~60mm.
Solid solution temperature is 900~1050 DEG C in step 3, and soaking time is 0.5~1.5 hour, water quenching, cold rolling
Power is 250~400kN, and mill speed is 12~25m/min, and alloy cold rolling reduction is 10~70%.
Aging temperature is 400~520 DEG C in step 3, and soaking time is 1.5~4.5 hours.
Cu-Cr-Zr-Mg alloy each element content obtained is according to mass percent are as follows: and Cr content is 0.3%~1.2%,
Zr content is that 0.1~0.6%, Mg content is 0.08~0.45%, surplus Cu, and the sum of above element mass percent is
100%.
The beneficial effects of the present invention are: a kind of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy of the present invention is being adopted
On the basis of the as cast condition Cu-Cr-Zr-Mg alloy prepared with copper mould casting cooling method, alloy is dissolved, cold-rolling deformation with
And ageing treatment, in the case where plastic deformation reinforced alloys matrix and heat treatment improve the collective effect of alloy microstructure, into one
Step promotes the performance of alloy.The dislocation interactions generated during Age-prrcipitation Phase and cold deformation, hinder precipitated phase not only
It the movement of dislocation and is quickly precipitated along dislocation that is intensive and being evenly distributed, promotes the raising of alloy strength and electric conductivity.
Detailed description of the invention
Fig. 1 is a kind of process flow chart of the preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy of the present invention；
Fig. 2 is a kind of cold rolling process signal of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy of the present invention
Figure；
Fig. 3 is the metallographic structure photo of 50 times of lower Cu-Cr-Zr-Mg alloys, and wherein a is solution treatment state Cu-Cr-Zr-Mg
Alloy structure, b are the Cu-Cr-Zr-Mg alloy structure under solution treatment after 40% cold deformation；
Fig. 4 is cold deformation timeliness Cu-Cr-Zr-Mg alloy prepared by the present invention and handles aging state Cu- without cold deformation
The performance comparison figure of Cr-Zr-Mg alloy.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy of the present invention, as shown in Figure 1, specifically according to following
Step is implemented:
Step 1, the preparation of Cu-Zr intermediate alloy
Weighed Cu block is put into and fills 3~12min of cleaning in spirituous ultrasonic oscillator, drying；Then by it
It is placed in vacuum arc melting furnace with weighed Zr loading graphite crucible, is evacuated down to 2 × 10-3Pa or more is passed through argon
Gas shielded controls melting electric current in 200~300A, melt back 2~5 times, obtains Cu- (20~50) wt%Zr intermediate alloy.
Step 2, prepared by Cu-Cr-Zr-Mg alloy
It is 0.3~1.2%, Zr content according to Cr content in Cu-Cr-Zr-Mg alloy is that 0.1~0.6%, Mg content is
0.08~0.45%, remaining be Cu (content refers to mass percent) requirement, will calculate load weighted Cu block, Cr, Mg block and
Cu-Zr intermediate alloy, is placed sequentially in graphite crucible from bottom to top, is evacuated down to 5 × 10-5Pa or more is filled with argon gas to protect
Protect gas.Alloy is rapidly heated to 1000~1200 DEG C first, keeps the temperature 2~5min, then be to slowly warm up to 1300~1600 DEG C,
10~25min is kept the temperature, is then cooled to 1100~1300 DEG C, 5~10min is kept the temperature, obtains Cu-Cr-Zr-Mg aluminium alloy.It will close
It is 80~150mm that golden liquid, which is poured into lower section outer diameter, and internal diameter is to obtain copper alloy in the copper mould of 20~60mm.
Step 3, the cold deformation and heat treatment of Cu-Cr-Zr-Mg alloy bar material
Cu-Cr-Zr-Mg cast alloy obtained in step 2 is put into heat-treatment furnace and carries out solution treatment, then using cold
Milling train carries out cold-rolling deformation to the Cu-Cr-Zr-Mg alloy of solid solution state, carries out ageing treatment then to get Cu-Cr-Zr-Mg is arrived
Alloy finished product.Solid solution temperature is 900~1050 DEG C, and soaking time is 0.5~1.5 hour, water quenching；The rolling of cold-rolling deformation
Power is 250~400kN, and mill speed is 12~25m/min, and cold rolling reduction is 10~70%；Aging temperature be 400~
520 DEG C, soaking time is 1.5~4.5 hours.
The present invention is on the basis of preparing Cu-Cr-Zr-Mg alloy using copper mold casting, by solid solution and timeliness
Reason is intermediate to introduce the further reinforced alloys of cold-rolling deformation.On the one hand, cold deformation makes supersaturated solid solution in subsequent ag(e)ing process
By obtaining enough precipitation power, be conducive to promote the quantity of precipitated phase and the disperse degree of distribution；On the other hand, it is precipitated
Precipitated phase is mutually set not only to hinder the movement of dislocation but also along intensive and distribution with the dislocation interactions generated during cold deformation
Uniform dislocation is quickly precipitated.In summary two aspect can achieve raising using present invention preparation Cu-Cr-Zr-Mg alloy and close
Golden electric conductivity, the purpose of intensity.
Embodiment 1
Weighed Cu block is put into vacuum arc melting furnace with Zr, is evacuated down to 2 × 10-3More than, it is passed through argon gas
It protects, electric current should be controlled at 200 amperes in fusion process, melt back 4 times, obtain Cu-20wt%Zr intermediate alloy.Prepare mesh
The alloy that ingredient is Cu-0.3Cr-0.1Zr-0.08Mg is marked, load weighted Cu block, Cr, conjunction among Mg block and Cu-Zr will be calculated
Gold is sequentially placed into graphite crucible by sequence from bottom to top, is evacuated down to 5 × 10-3Pa or more, being filled with argon gas is protective gas.
Alloy is rapidly heated to 1000 DEG C first, keeps the temperature 2min, then be warming up to 1300 DEG C, 10min is kept the temperature, is then cooled to 1100
DEG C, keep the temperature 5min.It is 80mm that aluminium alloy, which is poured into lower section outer diameter, and internal diameter is to obtain as cast condition Cu-Cr- in the copper mould of 20mm
Zr-Mg alloy.Cast alloy obtained is put into heat-treatment furnace and carries out solution treatment, solid solubility temperature is 900 DEG C, and the time is
1.5h, water quenching；Using cold-rolling mill to solid solution state alloy carry out cold-rolling deformation, roll-force 250kN, mill speed 12m/min,
Cold rolling reduction is 20%；Ageing treatment is carried out to the alloy after cold-rolling deformation, aging temp is 400 DEG C, time 4.5h.Through
It is machined to get Cu-0.3Cr-0.1Zr-0.08Mg alloy finished product is arrived.
Embodiment 2
Weighed Cu block is put into vacuum arc melting furnace with Zr, is evacuated down to 2 × 10-3Pa or more is passed through argon
Gas shielded should control electric current at 280 amperes in fusion process, melt back 3 times, obtain Cu-25wt%Zr intermediate alloy.Preparation
Target component is the alloy of Cu-0.5Cr-0.2Zr-0.15Mg, will calculate load weighted Cu block, Cr, among Mg block and Cu-Zr
Alloy is sequentially placed into graphite crucible by sequence from bottom to top, is evacuated down to 5 × 10-3Pa or more is filled with argon gas as protection gas
Body.Alloy is rapidly heated to 1050 DEG C first, keeps the temperature 3min, then be to slowly warm up to 1350 DEG C, 15min is kept the temperature, then cools down
To 1150 DEG C, 6min is kept the temperature.It is 120mm that aluminium alloy, which is poured into lower section outer diameter, and internal diameter is to obtain as cast condition in the copper mould of 30mm
Cu-Cr-Zr-Mg alloy.Cast alloy obtained is put into heat-treatment furnace and carries out solution treatment, solid solubility temperature is 930 DEG C, the time
For 1.2h, water quenching；Cold-rolling deformation, roll-force 280kN, mill speed 15m/ are carried out using alloy of the cold-rolling mill to solid solution state
Min, cold rolling reduction 30%；Ageing treatment is carried out to the alloy after cold-rolling deformation, aging temp is 420 DEG C, time 4h.
It is machined to get arrive Cu-0.5Cr-0.2Zr-0.15Mg alloy finished product.
Embodiment 3
Weighed Cu block is put into vacuum arc melting furnace with Zr, is evacuated down to 2 × 10-3Pa or more is passed through argon
Gas shielded should control electric current at 300 amperes in fusion process, melt back 5 times, obtain Cu-40wt%Zr intermediate alloy.Preparation
Target component is the alloy of Cu-0.8Cr-0.3Zr-0.25Mg, will calculate load weighted Cu block, Cr, among Mg block and Cu-Zr
Alloy is sequentially placed into graphite crucible by sequence from bottom to top, is evacuated down to 5 × 10-3Pa or more is filled with argon gas as protection gas
Body.Alloy is rapidly heated to 1100 DEG C first, keeps the temperature 4min, then be to slowly warm up to 1400 DEG C, 18min is kept the temperature, then cools down
To 1180 DEG C, 6min is kept the temperature.It is 130mm that aluminium alloy, which is poured into lower section outer diameter, and internal diameter is to obtain as cast condition in the copper mould of 40mm
Cu-Cr-Zr-Mg alloy.Cast alloy obtained is put into heat-treatment furnace and carries out solution treatment, solid solubility temperature is 950 DEG C, the time
For 1h, water quenching；Cold-rolling deformation, roll-force 300kN, mill speed 18m/ are carried out using alloy of the cold-rolling mill to solid solution state
Min, cold rolling reduction 40%；Ageing treatment is carried out to the alloy after cold-rolling deformation, aging temp is 450 DEG C, and the time is
3.5h.It is machined to get arrive Cu-0.8Cr-0.3Zr-0.25Mg alloy finished product.
Embodiment 4
Weighed Cu block is put into vacuum arc melting furnace with Zr, is evacuated down to 2 × 10-3Pa or more is passed through argon
Gas shielded should control electric current at 330 amperes in fusion process, melt back 4 times, obtain Cu-45wt%Zr intermediate alloy.Preparation
Target component is the alloy of Cu-1.0Cr-0.45Zr-0.3Mg, will calculate load weighted Cu block, Cr, among Mg item and Cu-Zr
Alloy is sequentially placed into graphite crucible by sequence from bottom to top, is evacuated down to 5 × 10-3Pa or more is filled with argon gas as protection gas
Body.Alloy is rapidly heated to 1150 DEG C first, keeps the temperature 4min, then be to slowly warm up to 1550 DEG C, 12min is kept the temperature, then cools down
To 1200 DEG C, 10min is kept the temperature.It is 140mm that aluminium alloy, which is poured into lower section outer diameter with furnace, and internal diameter is to obtain in the copper mould of 50mm
Obtain as cast condition Cu-Cr-Zr-Mg alloy.Cast alloy obtained is put into heat-treatment furnace and carries out solution treatment, solid solubility temperature is
980 DEG C, time 0.8h, water quenching；Cold-rolling deformation, roll-force 350kN, rolling are carried out using alloy of the cold-rolling mill to solid solution state
Speed is 20m/min, cold rolling reduction 60%；Ageing treatment, aging temp 480 are carried out to the alloy after cold-rolling deformation
DEG C, time 2.5h.It is machined to get arrive Cu-1.0Cr-0.45Zr-0.3Mg alloy finished product.
Embodiment 5
Weighed Cu block is put into vacuum arc melting furnace with Zr, is evacuated down to 2 × 10-3Pa or more is passed through argon
Gas shielded should control electric current at 380 amperes in fusion process, melt back 2 times, obtain Cu-50wt%Zr intermediate alloy.Preparation
Target component is the alloy of Cu-1.2Cr-0.6Zr-0.45Mg, will calculate load weighted Cu block, Cr, among Mg item and Cu-Zr
Alloy is sequentially placed into graphite crucible by sequence from bottom to top, is evacuated down to 5 × 10-3Pa or more is filled with argon gas as protection gas
Body.Alloy is rapidly heated to 1200 DEG C first, keeps the temperature 2min, then be to slowly warm up to 1600 DEG C, 10min is kept the temperature, then cools down
To 1300 DEG C, 5min is kept the temperature.It is 150mm that aluminium alloy, which is poured into lower section outer diameter with furnace, and internal diameter is to obtain in the copper mould of 60mm
As cast condition Cu-Cr-Zr-Mg alloy.Cast alloy obtained is put into heat-treatment furnace and carries out solution treatment, solid solubility temperature 1000
DEG C, time 0.5h, water quenching；Cold-rolling deformation, roll-force 400kN, rolling speed are carried out using alloy of the cold-rolling mill to solid solution state
Degree is 25m/min, cold rolling reduction 70%；Ageing treatment is carried out to the alloy after cold-rolling deformation, aging temp is 500 DEG C,
Time is 1.5h.It is machined to get arrive Cu-1.2Cr-0.6Zr-0.45Mg alloy finished product.
The present invention adds power and heat treatment parameter by changing the additive amount, smelting temperature, cold deformation of alloying element, makes
The Cu-Cr-Zr-Mg alloy of standby high-strength highly-conductive out.
Fig. 2 show the present invention to Cu-Cr-Zr-Mg alloy cold rolling process schematic diagram, wherein 1 is the Cu- for being dissolved state
Cr-Zr-Mg alloy bar material, 2 and 3 be respectively the top and bottom rolls of cold-rolling mill, and alloy is moulded under the squeezing action of top and bottom rolls
Property deformation, provide power for Second Phase Precipitation in subsequent ag(e)ing process.
Fig. 3 show the metallographic structure photo of 50 times of lower Cu-Cr-Zr-Mg alloys, and wherein a is solution treatment state Cu-Cr-
Zr-Mg alloy structure, b are the Cu-Cr-Zr-Mg alloy structure under solution treatment after 40% cold deformation, it can be seen that solid solution state
The polygon crystal grain of Cu-Cr-Zr-Mg alloy after by cold-rolling deformation, turned round along deformation direction by crystal grain extrusion
Turn, elongates.The intensive dislocation that the cold deformation stage generates provides channel for the precipitation of subsequent the second phase of Stages of Aging, to be promoted
Ageing strengthening effect.
Fig. 4 show cold deformation timeliness Cu-Cr-Zr-Mg alloy prepared by the present invention and handles aging state with without cold deformation
The performance comparison figure of Cu-Cr-Zr-Mg alloy, it can be seen that compared to traditional fixation rates, in solid solution and aging treatment
Centre introduces after a degree of cold deformation, and ascendant trend is presented in the conductivity and hardness of alloy, and wherein hardness promotion reaches
20.28%.
Claims (10)
1. a kind of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy, which is characterized in that specifically real according to the following steps
It applies:
Step 1, melting:
Cu block, Cr, Mg block and Cu-Zr intermediate alloy are placed in melting container, in the induction melting for being connected with inert gas
Melting is carried out in furnace, obtains Cu-Cr-Zr-Mg aluminium alloy；
Step 2, it casts:
The Cu-Cr-Zr-Mg aluminium alloy that step 1 is obtained is poured in copper mould, is cooling, obtains as cast condition Cu-Cr-Zr-Mg conjunction
Gold；
Step 3, cold working and heat treatment:
The as cast condition Cu-Cr-Zr-Mg alloy that step 2 obtains is put into heat-treatment furnace and carries out solution treatment, using cold-rolling mill to solid
The alloy of solvent carries out cold-rolling deformation, then carries out ageing treatment to the alloy after cold deformation, then machined to get arriving
Cu-Cr-Zr-Mg alloy finished product.
2. a kind of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy according to claim 1, which is characterized in that
Zr content is 20~50wt%, surplus Cu in Cu-Zr intermediate alloy in the step 1.
3. a kind of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy according to claim 1, which is characterized in that
Cr-Zr intermediate alloy is obtained with Zr through vacuum arc melting using Cu block in the step 1.
4. a kind of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy according to claim 1, which is characterized in that
Cu block, Cr, Mg block and Cu-Zr intermediate alloy are placed sequentially in melting container by sequence from bottom to top in the step 1.
5. a kind of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy according to claim 1, which is characterized in that
Vaccum sensitive stove is controlled in the fusion process of the step 1 is evacuated down to 5 × 10-3Pa or more, and it is passed through inert gas shielding.
6. a kind of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy, feature exist according to claim 1 or 5
In the temperature control mode of step 1 fusion process are as follows: alloy is rapidly heated to 1000~1200 DEG C first, heat preservation 2~
5min, then be to slowly warm up to 1300~1600 DEG C keeps the temperature 10~25min, is then cooled to 1100~1300 DEG C, and heat preservation 5~
10min。
7. a kind of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy according to claim 1, which is characterized in that
The outer diameter of copper mould is 80~150mm in the step 2, and internal diameter is 20~60mm.
8. a kind of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy according to claim 1, which is characterized in that
Solid solution temperature is 900~1050 DEG C in the step 3, and soaking time is 0.5~1.5 hour, water quenching, and mill rolling force prediction is
250~400kN, mill speed are 12~25m/min, and alloy cold rolling reduction is 10~70%.
9. a kind of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy according to claim 1, which is characterized in that
Aging temperature is 400~520 DEG C in the step 3, and soaking time is 1.5~4.5 hours.
10. a kind of preparation method of cold deformation strengthening Cu-Cr-Zr-Mg alloy according to claim 1, which is characterized in that
The Cu-Cr-Zr-Mg alloy each element content obtained is according to mass percent are as follows: Cr content is that 0.3%~1.2%, Zr contains
It is 0.08~0.45% that amount, which is 0.1~0.6%, Mg content, surplus Cu, and the sum of above element mass percent is 100%.
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| CN112126804A (en) * | 2020-08-20 | 2020-12-25 | 西安理工大学 | Method for preparing copper-chromium-niobium alloy bar by cooling copper die and direct aging |
| CN114406228A (en) * | 2022-01-10 | 2022-04-29 | 营口理工学院 | Copper alloy casting forming nano chromium phase in solidification process and casting method |
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Application publication date: 20191025 |